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The angular velocity of a wheel increas...

The angular velocity of a wheel increases from 100 to 300 in 10 s. The number of revolutions made during that time is

A

600

B

1500

C

1000

D

2000

Text Solution

Verified by Experts

The correct Answer is:
D
Angular displacement during time,
`theta=100 pi,t-=5 s, omega=?`
Angular speed,`omega=(theta)/(t)=(100pi)/(5)=20pi`
Therefore, number of revolutions made during the time,
`= (4000 pi)/(2 pi) = 2000`.
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DC PANDEY ENGLISH-ROTATION-Check point 9.1
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